Thruster components are hard coded to apply the force only to the attach parent, which in your case is not the one simulating physics, so it does nothing. You could use the add force at location node on the physics body, because that’s what the thruster component uses internally. Get the thrusters world location for the force location, for the force, get the thrusters world rotator and rotate the vector (x=1.0,y=0,z=0) and multiply by the thrusters strength.